We've been searching for such a cable for some time to offer on HiFi Headphones. It's the way to get the best audio signal out of the iPod as a proper non-amplified line level signal is presented on the dock connector, which means you can feed a portable headphone amp with a nice clean signal (avoiding the noisy headphone output).

Keep an eye on the iPod cables & interconnects area on the HiFi Headphones website in the new year. We should also be introducing a rather nice portable headphone amp at about the same time!

I've been looking for a way to drive my Graham Slee Voyager headphone amp with the line out available on the iPod dock connector for some time. That iPod Dock to 3.5mm Jack Cable looks just the job!

I've noticed that other headphone amps often have RCA phono audio inputs. In particular I was thinking of the Graham Slee Novo, but I've also seen it with portable headphone amplifiers. Is there a cable that will connect the lineout on the iPod dock to an amp with RCA phono inputs?

I'm currently investigating cables from Russ Andrews, a firm I've bought my loudspeaker cables and hifi interconnects from for years. Noticed yesterday that they had some iPod docking cables. I've never been disappointed in their products, and always found my cabling upgrades improved the music.